8.51 Consider a thin-walled, metallic tube of length L 1 m and inside diameterD 3 mm. Water enters the tube at m 0.015 kg /sm-0.015 kg/s and Tm.i=97°C.a. What is the outlet temperature of the water if the tube surface temperature ismaintained at 27 C? (b. If a 0.5-mm-thick layer of insulation of k = 0.05 W/m-K is applied to the tube andits outer surface is maintained at 27°C, what is the outlet temperature of the water?c. If the outer surface of the insulation is no longer maintained at 27°C but is allowedto exchange heat by free convection with ambient air at 27°C, what is the outlettemperature of the water? The free convection heat transfer coefficient is5 W/m-K

Answered: Image /qna-images/answer/da150fcb-cf73-4cd6-819a-20c7898af545.jpg

8.51 Consider a thin-walled, metallic tube of length L =1 m and inside diameter Di 3 mm. Water enters the tube at m 0.015 kg/sm-0.015 kg/s and Tm,i 97°C. a. What is the outlet temperature of the water if the tube surface temperature is maintained at 27°C? ( b. If a 0.5-mm-thick layer of insulation of k 0.05 W/m-K is applied to the tube and %3D its outer surface is maintained at 27°C, what is the outlet temperature of the water? If the outer surface of the insulation is no longer maintained at 27°C but is allowed c. to exchange heat by free convection with ambient air at 27°C, what is the outlet temperature of the water? The free convection heat transfer coefficient is 5 W/m2-K.

8.51 Consider a thin-walled, metallic tube of length L =1 m and inside diameter Di 3 mm. Water enters the tube at m 0.015 kg/sm-0.015 kg/s and Tm,i 97°C. a. What is the outlet temperature of the water if the tube surface temperature is maintained at 27°C? ( b. If a 0.5-mm-thick layer of insulation of k 0.05 W/m-K is applied to the tube and %3D its outer surface is maintained at 27°C, what is the outlet temperature of the water? If the outer surface of the insulation is no longer maintained at 27°C but is allowed c. to exchange heat by free convection with ambient air at 27°C, what is the outlet temperature of the water? The free convection heat transfer coefficient is 5 W/m2-K.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

8.51 Consider a thin-walled, metallic tube of length L 1 m and inside diameter
D 3 mm. Water enters the tube at m 0.015 kg /sm-0.015 kg/s and Tm.i=97°C.
a. What is the outlet temperature of the water if the tube surface temperature is
maintained at 27 C? (
b. If a 0.5-mm-thick layer of insulation of k = 0.05 W/m-K is applied to the tube and
its outer surface is maintained at 27°C, what is the outlet temperature of the water?
c. If the outer surface of the insulation is no longer maintained at 27°C but is allowed
to exchange heat by free convection with ambient air at 27°C, what is the outlet
temperature of the water? The free convection heat transfer coefficient is
5 W/m-K

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